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51682228 = 221335881
BaseRepresentation
bin1100010100100…
…1101110110100
310121020201200121
43011021232310
5101212312403
65043421324
71165202023
oct305115664
9117221617
1051682228
112719a694
1215384844
13a927000
146c148ba
15480d3bd
hex3149bb4

51682228 has 24 divisors (see below), whose sum is σ = 97994120. Its totient is φ = 23849280.

The previous prime is 51682217. The next prime is 51682237. The reversal of 51682228 is 82228615.

51682228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7963684 + 43718544 = 2822^2 + 6612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51682193 and 51682202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5848 + ... + 11728.

Almost surely, 251682228 is an apocalyptic number.

It is an amenable number.

51682228 is a deficient number, since it is larger than the sum of its proper divisors (46311892).

51682228 is a wasteful number, since it uses less digits than its factorization.

51682228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924 (or 5896 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 51682228 is about 7189.0352621197. The cubic root of 51682228 is about 372.4892491229.

It can be divided in two parts, 5168 and 2228, that added together give a square (7396 = 862).

The spelling of 51682228 in words is "fifty-one million, six hundred eighty-two thousand, two hundred twenty-eight".

Divisors: 1 2 4 13 26 52 169 338 676 2197 4394 5881 8788 11762 23524 76453 152906 305812 993889 1987778 3975556 12920557 25841114 51682228